Trimming die



A. LE FRE' TRIMMING DIE May 13 924o Filed April 28. 1923 2 SheetSvSheetl `A TTORNEY.;`

May 13 1924.

A. LE FRE TRIMMING DIE Filed April 28 1923 2 Shet$-$heet 2 INVENTOR./7//a0rf Le F/" BYQ6% ATTORNEY:

Patented May 13, 1924.

l E S 1 TES Lasser PATENT orrica.

ALIDOR LEFRE OFKJACKSON, MICHIGAN, .ASSIGNOR TO RIVERSIDE FORGE ANDMACHINE COMPANY, OF JACKSON, MICHIGAN.

'rRIi/IMING DIE.

Application led April 2B, 1923. ASerial No. 635,382.

'Ihis inventionrelates to improvements in trimming dies.

The main objects of this invention are:

First, to provide a trimming die for wheel hub forgings which accuratelycenters and trims the work.

Second, to provide an improved trimming die which is of large capacityand at the same time permits uniformly accurateA work.

Third, to provide an improved trimming die for hub forgings which-is notlikely to get out of repair.

Objects pertaining to details and economies of construction andoperation will definitely appear from the detailed description tofollow.

I accomplish the objects of my invention by the devices and meansdescribed in the following specification. The invention is clearlydefined and pointed out in the claims.

A structure which is a preferred embodiment of my invention is clearlyillustrated in the accompanying dra-wing forming a part of thisapplication, in which:l y

Fig. I is a detail view, mainly in `vertical section on a linecorresponding to line 1-1 o-f Fig.` II of my improved trimming die,

the male die member or plunger being shown in partially retractedposition, apiece of work being illustrated in position and only suchparts ofthe machine being illustrated as are deemed necessary to show anadaptation or embodimentof my invention.

Fig. II is a horizontal section on a line corresponding to line 2-2 ofFig. I. n

Fig. III is a perspective view of one of the hubI forgings prior totrimming.

Fig. IV is a perspective view of one of the hub forgings after trimming.

In the drawing similar referencenumerals indica-te similar partsthroughout the views and the sectional views are taken looking in thedirection of the little arrows at the ends of the section lines. j j jReferring to the drawing, 1 represents the bed of the machine of thepunch press type. and 2 the plunger. vThe operating parts of the machineare not illustrated as they form no part of this'invention. Upon the bed1 I mount a bed member 3 having a shouldered recess 4.- in its face, theannular die member 5 being secured in this recess.

The bed member is also provided with a longitudinal bore 6, the diemember 5 being concentric relative to this bore. The work centeringmember 7 is a reciprocating fit within the bore and is yieldinglysupported by means of the coiled spring 8 arranged within the bore, thebore having a shoulder 9 at its lower end to support the spring.

This centering member has a seat or socket 10 for the hub portion 11 ofthe `hubforging 12, the seat being conformed so that the hub forging maybe dropped into it and is properly centered relative to the dies. Asthese forgings come from the forging dies they ordinarily have a web rorflash of metal as 13. It will be understood that no attempt is made toillustrate the relative proportion of flash as this is normallyirregular. l

rIhe work centering member 7y is normally held in the projected positionshown to receive the work without danger of its being dropped upon thedie, which mightv chip the same, and also it serves as astripper orejector for the work after it has been oper-y ated upon. v

The male die member 14 is mounted upon the plunger'to coact with thefemale die member. and has a longitudinal bore 15 thereinin which thework clamp 16 is reciprocatingly mounted,the work clamp having a stem 17provided with a retaining pin 1S to limit the downward throw of theclamp under its actuating spring 19. The clamp 16 is normally projectedand its face is conformed to engage the inner side of the hub forgingcoacting with the centering .thestripper's are yieldingly held in theirprojected position.

With this arrangement of parts I provide a machine which is veryaccurate, can be operated by Workmen not particularly skilled and is oflarge capacity.

I have illustrated and described my improvements as I have embodied themfor trimming hub 'forgings My improvements may, however, be adapted andare desirable for use in trimming other forgings and parts. I have notattempted to illustrate or describe such embodiments or adaptations as Ibelieve the disclosure made Will enable those skilled in the art towhich my invention relates to embody or adapt the same as may bedesired.

Having thus described my invention what I claim as new and desire tosecure by Letters Patent is:

l. In a structure of the class described, the combination of a bedmember having a shouldered recess in its face and a central longitudinalbore, an annulary female die member seating in said recess, a Workcentering member reciprocating in said bore and adapted to center thework relative to said female die member, a spring for normallysupporting said Work supporting member in projected position, areciprocating male die member having a central longitudinal bore, a Workclamping member reciprocating in said bore of said male die member,'aspring for yieldingly supporting said Work clamping member, strippersmounted on said male die member for reciprocating movementlongitudinally thereof, and springs for actuating said strippers.

2. `In 'a structure of the class described, the combination of a bedmember'having a shouldered recess in its face and a central longitudinalbore, an annular female die member seating in` said recess, a Workcentering member reciprocating in said bore and adapted to center theWork relative to said female die member, a spring for nor mallysupporting said Work supporting member in projected position, areciprocating male die member havinga central longitudinal bore, a Workclamping member reciprocating in said bore of'said male die member, anda spring for yieldingly supporting said Work clamping member.

3. In a structure of the class described, the combination of a bedmember having a shouldered recess in its face and a central longitudinalbore, an annular female die member lseating in said recess, a Workcentering member reciprocating in said bore and adapted to center theWork relative to said female die member, a spring for normallysupporting said Work supporting member in projected position, areciprocat-` ing male die member having a central longitudinal bore, aWork clamping member reciprocating in said bore of said male die member,a spring for yieldingly supporting said Worlr clamping member, and stopsadjustably mounted on said male die member.

4L. In a structure of the class described, the combination of a bedmember having a shouldered recess in its face and a central longitudinalbore, an annular 'female die member seating in said recess, a Work sup-`porting member reciprocating in said bore and adapted to center the Workrelative to said female die member, a spring for normally supportingsaid Work supporting member in projected position, a coactingreciprocating male die member, a stripper reciprocatingly mounted on,said male die member, and a spring ioractuating said stripper.

5. In a structure of the class described, the combination of a bedmember having a shouldered recess in its :tace and a centrallongitudinal bore, an annular female die member seating in said recess,a Work supporting member reciprocating in said bore and adapted tocenter the Work relative to said Jfemale die member, a spring fornormally supporting said Work supporting member in projected position,and a coacting reciprocating male die member.

6. In a structure or" the class described, the combination of a bedmember having a shouldered recess in its tace and a central longitudinalbore, an annular female die member seating in said recess, a Worksupporting member reciprocating in said bore and adapted to center theWork relative to said female die member, a springr for normallysupporting said Work supporting member in projected position, a coactingreciprocating maledie member, and a stop adjustably mounted on said maledie member.

7. In a structure ofthe class described,.

the combination of a bed member provided with an annular die-member, aWork centering member reciprocatingly mounted in said bed member, aspringfor yieldably supporting said Work centering member, acoacting'male die member, a Werl; clamping member reciprocating in saidmale die mem ber in alignment with said centering member, and a springfor yieldingly supportingy said work clamping member.

9. In. a structure of thev class described,

the combination of a bed member provided With an annular die member, aWork cen` tering member reciprocatingly mounted in said bed member, aspring for yieldably supporting Said Work centering member, a coactingmale die member, a Work clamping member reciprocating in said male diemember in alignment with said centering member, a springfor yieldinglysupporting said Work clamping member, and a stop adjustably mounted onSaid male die member.

l0. In a structure of the class described, the combination of a bedmember provided with an annular die member, a work centering,r memberreciprocatingly mounted in said bed member, a spring for yieldablysupporting said Work centering member, a coacting male die member, andspring actuated strippers reciprocatingly mounted on said male diemember.

11. In a structure of the class described, the combination of a bedmember provided with an annular die member, a Work centering memberreciprocatingly mounted in Said bed member, a vspring for yieldablysupporting said Work centering member normally above said die member,and a coaeting male die member.

12. In a structure of the class described, the combination of a bedmember provided with an annular die member, a Work centering memberreciprocatingly mounted in said bed member, a spring for yieldablysupporting said Work centering member normally above said die member, acoacting male die member, and Stops adjustably mounted on said male diemember.

In witness whereof, I have hereunto set my hand.

ALIDOR LEFERE. [Le]

